FixedLayout

GtkFixedLayout is a layout manager which can place child widgets at fixed positions.

Most applications should never use this layout manager; fixed positioning and sizing requires constant recalculations on where children need to be positioned and sized. Other layout managers perform this kind of work internally so that application developers don't need to do it. Specifically, widgets positioned in a fixed layout manager will need to take into account:

- Themes, which may change widget sizes.

- Fonts other than the one you used to write the app will of course change the size of widgets containing text; keep in mind that users may use a larger font because of difficulty reading the default, or they may be using a different OS that provides different fonts.

- Translation of text into other languages changes its size. Also, display of non-English text will use a different font in many cases.

In addition, GtkFixedLayout does not pay attention to text direction and thus may produce unwanted results if your app is run under right-to-left languages such as Hebrew or Arabic. That is: normally GTK will order containers appropriately depending on the text direction, e.g. to put labels to the right of the thing they label when using an RTL language; GtkFixedLayout won't be able to do that for you.

Finally, fixed positioning makes it kind of annoying to add/remove UI elements, since you have to reposition all the other elements. This is a long-term maintenance problem for your application.

class FixedLayout : LayoutManager {

protected

GtkFixedLayout* gtkFixedLayout;

GtkFixedLayout* getFixedLayoutStruct(bool transferOwnership);

void* getStruct();

this(GtkFixedLayout* gtkFixedLayout, bool ownedRef);

static GType getType();

this();

}

Constructors

this this(GtkFixedLayout* gtkFixedLayout, bool ownedRef): Sets our main struct and passes it to the parent class.
this this(): Creates a new GtkFixedLayout.

Members

Functions

getFixedLayoutStruct GtkFixedLayout* getFixedLayoutStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*

Static functions

getType GType getType()

Variables

gtkFixedLayout GtkFixedLayout* gtkFixedLayout;: the main Gtk struct

Inherited Members

From LayoutManager

gtkLayoutManager GtkLayoutManager* gtkLayoutManager;: the main Gtk struct
getLayoutManagerStruct GtkLayoutManager* getLayoutManagerStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
getType GType getType()
allocate void allocate(Widget widget, int width, int height, int baseline): Assigns the given @width, @height, and @baseline to a @widget, and computes the position and sizes of the children of the @widget using the layout management policy of @manager.
getLayoutChild LayoutChild getLayoutChild(Widget child): Retrieves a GtkLayoutChild instance for the GtkLayoutManager, creating one if necessary.
getRequestMode GtkSizeRequestMode getRequestMode(): Retrieves the request mode of @manager.
getWidget Widget getWidget(): Retrieves the GtkWidget using the given GtkLayoutManager.
layoutChanged void layoutChanged(): Queues a resize on the GtkWidget using @manager, if any.
measure void measure(Widget widget, GtkOrientation orientation, int forSize, int minimum, int natural, int minimumBaseline, int naturalBaseline): Measures the size of the @widget using @manager, for the given @orientation and size.